苯甲酸基

The protein had the specificity on substrate recognition, which could decompose 3,4-dihydroxybenzoic acid to catechol but not 2,4-dihydroxy- benzoic acid to resorcin. The ligand at C-3 site of benzene ring had no effect on enzyme activity.

蛋白质还具有底物识别的特异性，能够催化3，4-二羟基苯甲酸转化为邻苯二酚，而不能催化2，4-二羟基苯甲酸转化为间苯二酚，这表明苯环上3'位的配基对酶活无影响。

In addition, there were also some special aromatic substances such as 1-nonanol, hexanoic acid 2-hexenyl ester, propanoic acid 2-hexenyl ester, butanioc acid 3-hexenyl estertrans-2-hexenyl valerate, theaspirane, gerenylacetone, methyl benzoate and ethyl benzoate.

此外还含有一些少量的1-壬醇、己酸－2-己烯酯、丙酸－反－2-己烯酯、丁酸－反－3-己烯酯、戊酸－反－2-己烯酯、茶螺烷、香叶基丙酮、苯甲酸甲酯、苯甲酸乙酯和乙酸辛酯等。

Water,butylene glycol,cyclomethicone,VP/VA copolymer,glyceryl stearate,glycerin,ppg-15 stearyl ether,titanium dioxide,propylene glycol,cetyl alcohol,citrus aurantium dulcisfruit extract,saccharide isomerate,biosaccharide gum-1,ethoxydiglycol,peg-40 stearate,glycyrrhiza glabraroot extract,morus bombycis root extract,potassium cetyl phosphate,phenoxyethanol,c12-20 acid peg-8 ester,triethanolamine,prunus amygdalus dulcis oil,carbomer,caprylyl glycol,caffeine,disodium edta,methylparaben,chondrus crispus,butylparaben,iris germanica root extract,pentadecalactone,sodium polyacrylate,ethylparaben,sodium hyaluronate,peg-8,propylparaben,citric acid,chlorhexidine digluconate,tocopherol,ascorbyl palmitate,ascorbic acid

水，丁烯二醇，环甲硅脂，VP/VA共聚物，甘油基硬脂酸，甘油，ppg-15 stearyl ether，二氧化钛，丙二醇，十六烷基醇，橙子萃取物，天然异构寡糖， biosaccharde gum-1，乙基氧基乙二醇，聚乙二醇- 40硬脂酸，甘草根提取物，桑白皮根萃取，钾十六烷基磷酸盐，苯氧乙醇，c12-20 acid peg-8 ester，三乙醇胺，甜杏仁油，高分子胶，辛乙二醇，咖啡因，乙二胺四乙酸二钠，对羟基苯甲酸甲酯，卡拉胶，对羟基苯甲酸丁酯，鸢尾花根萃取， pentadecalactone ，聚丙烯酸钠，羟苯乙酯，透明质酸钠，聚乙二醇- 8，羟苯丙酯，柠檬酸，洗必泰葡萄糖酸盐，维生素E，维生素C棕榈酸酯，抗坏血酸

The oxidation of p-nitrotoluene-2-sulfonic acid to prepare 4, 4'-dinitrostilbene-2, 2'-disulfonic acid was monitored, and the mechanism for the formation of by-products 4-nitrobenzaldehyde-2-sulfonic acid and 4-nitro-2-sulfobenzonic acid was suggested.

跟踪了对硝基甲苯邻磺酸制备4，4'-二硝基二苯乙烯－2，2'-二磺酸的过程，推测了4-硝基苯甲醛2-磺酸钠与4-硝基苯甲酸2-磺酸钠杂质的生成机理。

Amino-6-nitrobenzodifuroxan was prepared through a three-step reaction from starting material 3, 5-dinitrobenzoic acid:(1)3, 5-dinitroaniline (1) was synthesized from the reaction of DNBA and hydrazoic acid in inert solvent 1, 2-dichioroethane through Schmidt rearrangement with yield of 89.6%;(2) 1 was subjected to nitration to prepare pentanitroaniline (2) with yield of 51.1%;(3) The title compound was prepared from 2 and sodium azide in acetic acid through denitrogenation and then Schmidt rearrangement with yield of 86.8%, m.p.204℃～206℃.

以3，5-二硝基苯甲酸为原料经过3步反应合成了7-氨基6-硝基苯并二氧化吠咱：第1步反应，在二氯乙烷惰性溶剂中，DNBA与叠氮酸反应并发生Schmidt重排反应生成3，5-二硝基苯胺(1)，产率89.6%；第2步反应，1在含100%硫酸的硝硫混酸中硝化生成五硝基苯胺(2)，产率51.1%；第3步反应，2与叠氮酸反应，不经分离直接进行热解脱氮、Schmidt重排反应，得到目标化合物， m.p.204℃~ 206℃，产率86.8%。

A HPLC method has been developed for the simultaneous determination of 4-methylbenzy- lalcohol,p-tolualdehyde,4-caboxybenzaldehyde,benzoic acid,p-toluie acid,terephthalic acid,o- phthalic acid and isophthalic acid in the residue from purification of terephthalic acid.

其残渣中含有再利用价值很高的中间产物：4一甲基苯甲醇(4一MBA)，对甲基苯甲醛(P一tolual-dehyde)，4一竣基苯甲醛(4一CBA)，苯甲酸，对甲基苯甲酸，对苯二甲酸，邻苯二甲酸，间苯二甲酸等。

Phenol, benzoic acid, and paraaminobenzoic acid, as the elicitors, were evaluated in lab of their efficiences to induce potato tuber against early blight, and the change of resistance related enzymes were investgated in induced potato tuber.

利用苯酚、对氮基苯甲酸和苯甲酸等3种芳香族类化合物作为激发子，对马铃薯块茎抗早疫病的效果进行了探讨，同时分析了诱导处理后马铃薯块茎中与抗病性相关的酶活性的变化。

In this paper, 4-4-(trifluoromethoxy benzoyl cyclohexyl-3, 5-diaminobenzoate with a large branch chain, pyromellitic dianhydride and 4-(4-aminobenzyl) benzenamine were used to synthesize polyimides. The effect of monomer charge order on pretilt angle was investigated for the first time when PIs were used as LC alignment layer, and the effect of diamine mole ratio on pretilt angle was studied. The thermal stability of the pretilt angle was discussed.

文章用均苯四酸二酐、4，4'-二胺基二苯甲烷和具有较大支链的4-（4-苯甲酰基）环己基－3，5-二胺基苯甲酸酯等单体制备聚酰亚胺，首次研究了单体加料顺序对液晶预倾角的影响，同时也研究了二胺配比对液晶预倾角的影响问题，并探讨了预倾角的热稳定性等问题。

By using isopropyl benzene as the internal standard material, using Agilent 1100 HPLC, using methanol-acetonitrile-water as mobile phase ,using three-component grade elution program, the components that contain benzene such as TALD,PT,4-CBA,TA,BA,PX and internal standard material isopropyl benzene in liquid phase product was analysed. Shimazu6A GC was used to analyse the solvent acetic acid and internal standard material isopropyl benzne in liquid phase.

以异丙苯为内标物，应用Agilent1100高效液相色谱仪，用甲醇－乙腈－水为流动相，采用三元梯度洗脱程序分析液相产物中的含苯环组分对甲基苯甲醛、对甲基苯甲酸、对羧基苯甲醛、对苯二甲酸、苯甲酸、对二甲苯和内标物异丙苯，应用Shimazu6A气相色谱仪分析液相中的溶剂醋酸和内标物异丙苯。

A series of p hydroxybenzoic acid oligomers were synthesized of p acetoxybenzoic acid (4 ABA).

用对乙酰氧基苯甲酸合成了一系列对羟基苯甲酸的齐聚物，由于这些齐聚物不溶于大部分有机溶剂，因此尝试用傅立叶红外谱半定量地分析齐聚物的聚合度。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。